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EP2932353B1 - Actuator for a tactile interface module with haptic feedback - Google Patents

Actuator for a tactile interface module with haptic feedback Download PDF

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Publication number
EP2932353B1
EP2932353B1 EP13803092.9A EP13803092A EP2932353B1 EP 2932353 B1 EP2932353 B1 EP 2932353B1 EP 13803092 A EP13803092 A EP 13803092A EP 2932353 B1 EP2932353 B1 EP 2932353B1
Authority
EP
European Patent Office
Prior art keywords
actuator
actuator according
fixing elements
movable core
haptic feedback
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13803092.9A
Other languages
German (de)
French (fr)
Other versions
EP2932353A1 (en
Inventor
Jean-Marc Tissot
Anthony Aubry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dav SA
Original Assignee
Dav SA
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Publication date
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Publication of EP2932353A1 publication Critical patent/EP2932353A1/en
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Publication of EP2932353B1 publication Critical patent/EP2932353B1/en
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/25—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using haptic output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/143—Touch sensitive instrument input devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/143—Touch sensitive instrument input devices
    • B60K2360/1438—Touch screens

Definitions

  • the present invention relates to an actuator for a tactile interface module, in particular for a motor vehicle, making it possible in particular to transmit haptic feedback to a user, such as vibratory feedback.
  • a user When a user exerts pressure on the tactile surface of a tactile feedback tactile interface module, the applied pressure can be measured and / or the location of where the pressure is exerted can be determined.
  • a user press is for example associated with the selection of a command.
  • a haptic feedback is generated so as to allow the user to remain focused on the road.
  • haptic feedback control modules comprising actuators, such as electromagnetic actuators, as described for example in the document FR2966613 A1 , connected to the interface module to transmit a vibration movement, so that the user perceives a haptic feedback informing him that his command has been taken into account
  • actuators such as electromagnetic actuators
  • the interface module to transmit a vibration movement
  • These electromagnetic actuators comprise a coil and one or more magnets movable in translation with respect to the coil. By energizing the coil, the magnets are set in motion, and this movement is transmitted to the touch surface.
  • the subject of the invention is an actuator for a haptic feedback tactile interface module, as defined by the appended independent claim to which reference should be made.
  • An actuator for a tactile feedback interface module with haptic feedback is thus produced with a small footprint.
  • the actuator can also include one or more characteristics, taken separately or in combination among those which follow.
  • the fixing means form a guide for the movement of the mobile core, which makes it possible not to have to implement additional guides for said movement.
  • the elastic means comprise helical springs wound around the fixing elements, the helical springs having a tubular shape which advantageously surrounds the fixing elements.
  • the elastic means comprise leaf springs which themselves comprise bores, the fixing elements passing through said bores, in particular for more flattened embodiments.
  • the elastic means comprise an elastic material such as urethane, an expanded polymer, an ionically crosslinked polymer, or rubber, potentially less expensive than the preceding metallic elements.
  • the elastic means are prestressed in compression, again with a view to a more flattened embodiment.
  • the fixing elements comprise screws, which allow adjustment or tightening of the dimensions and / or the stiffness of the elastic elements.
  • the fasteners have potentially cheaper rivets.
  • Fasteners feature snap-butted plastic rods that are metal-free and potentially even cheaper.
  • the movable core has at least one magnet, and the frame has a coil so that the stationary frame receives the element requiring power.
  • the frame comprises a body carrying part of the actuating means and a bottom, forming a support, and in that the body and the bottom have a temporary fixing, and are assembled by the fixing elements. This temporary fixing allows during assembly, the transport of the semi-finished product and to have an integral component.
  • the provisional fixation comprises a clipping by cooperation of form, simple and inexpensive provisional fixation.
  • the subject of the invention is also the associated haptic feedback tactile interface module, characterized in that it comprises an actuator as described above.
  • the invention relates to a tactile interface module with haptic feedback 1, for example for a control panel of a motor vehicle, or even for a central console of a motor vehicle, making it possible to control the electrical or electronic systems of the vehicle, and capable of transmitting.
  • haptic feedback to a user who, for example, modified or selected a command so as to ensure the user that the modified or selected command is taken into account.
  • the interface module comprises a touch surface 3, for example using capacitive or resistive technology integrated into the touch screens or touchpad or even simple button-type zones, sliders using capacitive or resistive technologies (known as FSR: Force Sensing Resistor) for detecting the location of a user's finger (and additionally the force in the case of resistive technology) on a position of its surface corresponding to a command. It is also possible to use a touch screen, transparent and superimposed on a display screen, operating for example by detecting surface waves.
  • FSR Force Sensing Resistor
  • the tactile surface is linked in a floating manner to the frame 5 of the tactile interface module 1.
  • the connection between the surface 3 and the frame 5 is made by a connection 7 of the semi-rigid membrane type, or any other fixing means allowing limited movements, especially in vibration along the axis perpendicular to the touch surface 3.
  • the tactile surface 3 is connected to an actuator 9 which causes the haptic feedback when the user presses it.
  • This actuator 9 comprises on the one hand a frame 11, made integral with the touch-sensitive surface 3, and a movable core 13 cooperating with the frame.
  • the movable core 13, housed in the frame 11 is set in motion between extreme positions by electromagnetic actuation means 15, 17. During this back-and-forth movement, the core alternates phases of acceleration and of deceleration, during which the movable core 13 drives the setting in motion of the tactile surface 3, and therefore the haptic feedback.
  • the frame 11 carries a coil 15 capable of providing a magnetic field and the movable core 13 carries at least one magnet 17, preferably several, arranged as close as possible to the coil 15, and is free in translation along axis AA.
  • the figure 1 shows an embodiment of a so-called "suspended" actuator. Through suspended, it is understood that the actuator 9 is not connected to the frame 5 of the touch interface module 1, and the frame 11 of the actuator is secured to the touch surface 3.
  • the movable core 13 has an E-section, the central branch of which is embedded in a corresponding U-section portion of the frame 11.
  • the figure 2 shows the actuator of the figure 1 schematically shown in profile, so that elastic means 21 and fixing elements 23 of said actuator 9, previously not shown, are visible.
  • figure 2 is shown in particular the line II according to which the section of the figure 1 Has been done.
  • said section is transverse, and the elastic means 21 and the fixing elements 23, which are located at the longitudinal ends, are therefore invisible in figure 1 .
  • the frame 11 comprises at its lateral ends extremal tongues 25, pierced in their center.
  • the movable core 13 also comprises end tongues 27, pierced in their center, arranged so that the holes in the tongues 25, 27 carried respectively by the frame 11 and the movable core 13 are aligned along the axis AA.
  • the holes in the tabs 25, 27 accommodate the fixing elements 23, here schematically represented in the form of screws, which form guides in translation of the mobile core 13.
  • dedicated guides of the dovetail or rectangular slide type can be used. between part 13 and frame 11 to perform this function.
  • end tongues 27 carried by the movable core 13 slide along the body of the screws forming the fixing elements during the movement of said movable core 13.
  • the elastic means 21, here helical springs are arranged around the fixing elements 23, with a helical spring 21 on either side of the end tongues 27 of the movable core 13.
  • the helical springs 21 are here wound around the screws forming fasteners 23.
  • the elastic means may comprise leaf springs which themselves comprise bores, the fixing elements 23 passing through said bores, if space is limited along the fixing elements 23.
  • the elastic means 21 may comprise an elastic material such as urethane, an expanded polymer, an ionically crosslinked polymer, or rubber, for example in the form of a ring or of a tube surrounding the fixing elements 23.
  • an elastic material such as urethane, an expanded polymer, an ionically crosslinked polymer, or rubber, for example in the form of a ring or of a tube surrounding the fixing elements 23.
  • each screw 23 has a head 29 of larger diameter, the other end 31 being screwed into a pre-drilled hole in a support for the touch surface 3.
  • each screw 23 advantageously retains one of the helical springs 21, and the prestressed in compression against the corresponding extremal tongue 27 of the movable core 13.
  • the helical spring 21 located vis-à-vis with respect to the extremal tongue 27 of the movable core 13 is itself prestressed between the tongue 27 and the panel carrying the tactile surface 3.
  • fastening elements 23 comprise rivets, stamped during the assembly, or plastic rods hot stamped on the assembly.
  • the elastic means 21 thus define in the present invention a floating rest position of the movable core, in the absence of actuation by the coil 15 and the magnets 17 forming the actuation means. This floating position allows more efficient actuation with the same energy supplied.
  • the figure 3 shows an alternative embodiment of interface module 1.
  • the embodiment of the figure 3 differs from that of the figure 2 in that the frame 11 is composed of a plurality of parts, here in particular two.
  • the frame here comprises a body 11a, comprising in particular the portion with a U-shaped section which carries the coil 15 and the end tongues 25, and a bottom 11b, which forms the bearing surface on the slab of the touch-sensitive surface 3.
  • the bottom 11b can also include side walls (not shown) to form an enclosure at least in places, enclosure that the end tongues 25 of the body 11a come to close.
  • the enclosure thus obtained protects in particular the actuator 9 from external elements such as dust.
  • the body 11a and the base 11b of the frame are connected by a temporary fixing 33, for example by clipping-type form cooperation.
  • the body 11a and the bottom 11b can be handled separately, then preassembled by means of the provisional fixing 33, before being definitively assembled by the fixing means 23 which permanently hold said body 11a and the bottom 11b together.
  • the body 11a and the bottom 11b can then be designed so as to be obtained by molding in fewer steps, and / or in simplified steps, for example without requiring undercut, cutting or subsequent milling.
  • the body 11a is potentially more easily manipulated during assembly of the coil 15, for example by automated winding of metal cable around the U-section portion.
  • the temporary fixing 33 allows a pre-assembly of the frame 11, possibly with the core 13 previously inserted in its position, so as to obtain a semi-finished module that is easily handled.
  • the pre-assembly and the assembly and the final assembly that said assembly implies can be carried out at different stations, potentially geographically distant.
  • the invention thus makes it possible to obtain a more compact actuator 9, easier to assemble and therefore potentially less expensive.
  • the elastic means 21 and the tightening of the fixing elements 23 make it possible to significantly reduce the play of the parts involved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • User Interface Of Digital Computer (AREA)

Description

La présente invention concerne un actionneur pour un module d'interface tactile, en particulier pour un véhicule automobile, permettant notamment de transmettre un retour haptique à un utilisateur, tel qu'un retour vibratoire.The present invention relates to an actuator for a tactile interface module, in particular for a motor vehicle, making it possible in particular to transmit haptic feedback to a user, such as vibratory feedback.

Lorsqu'un utilisateur exerce une pression sur la surface tactile d'un module d'interface tactile à retour tactile, on peut mesurer la pression appliquée et/ou déterminer la localisation de l'endroit où la pression est exercée. Dans ce cas, un appui de l'utilisateur est par exemple associé à la sélection d'une commande.When a user exerts pressure on the tactile surface of a tactile feedback tactile interface module, the applied pressure can be measured and / or the location of where the pressure is exerted can be determined. In this case, a user press is for example associated with the selection of a command.

En outre, pour signaler par exemple à l'utilisateur que sa commande a bien été prise en compte, notamment en conduite de nuit ou lors d'une manipulation en aveugle, un retour haptique est généré de manière à permettre à l'utilisateur de rester concentré sur la route.In addition, to signal for example to the user that his command has been taken into account, in particular when driving at night or during blind manipulation, a haptic feedback is generated so as to allow the user to remain focused on the road.

Pour ce faire, il est des modules de commande à retour haptique comportant des actionneurs, tels que des actionneurs électromagnétiques, comme décrit par exemple dans le document FR2966613 A1 , reliés au module d'interface pour transmettre un mouvement de vibration, de manière que l'utilisateur perçoive un retour haptique l'informant que sa commande a bien été prise en compte Un autre état de l'art est représenté par le document US6118435 A qui décrit un module d'interface tactile à retour haptique comprenant un ressort hélicoïdal latéral disposé autour d'éléments de fixation pour permettre le mouvement de haut en bas d'un noyau mobile.To do this, there are haptic feedback control modules comprising actuators, such as electromagnetic actuators, as described for example in the document FR2966613 A1 , connected to the interface module to transmit a vibration movement, so that the user perceives a haptic feedback informing him that his command has been taken into account Another state of the art is represented by the document US6118435 A which describes a haptic feedback tactile interface module comprising a side coil spring disposed around fasteners to allow up and down movement of a movable core.

Ces actionneurs électromagnétiques comportent une bobine et un ou plusieurs aimants mobiles en translation par rapport à la bobine. En alimentant la bobine, les aimants sont mis en mouvement, et ce mouvement est transmis à la surface tactile.These electromagnetic actuators comprise a coil and one or more magnets movable in translation with respect to the coil. By energizing the coil, the magnets are set in motion, and this movement is transmitted to the touch surface.

À cet effet, l'invention a pour objet un actionneur pour module d'interface tactile à retour haptique, tel que défini par la revendication indépendante jointe à laquelle il convient de se référer.To this end, the subject of the invention is an actuator for a haptic feedback tactile interface module, as defined by the appended independent claim to which reference should be made.

On réalise ainsi un actionneur pour module d'interface tactile à retour haptique avec un faible encombrement.An actuator for a tactile feedback interface module with haptic feedback is thus produced with a small footprint.

L'actionneur peut en outre comporter une ou plusieurs caractéristiques, prises séparément ou en combinaison parmi celles qui suivent.The actuator can also include one or more characteristics, taken separately or in combination among those which follow.

Les moyens de fixation forment un guide du mouvement du noyau mobile, ce qui permet de ne pas avoir à implémenter de guides additionnels pour ledit mouvement.The fixing means form a guide for the movement of the mobile core, which makes it possible not to have to implement additional guides for said movement.

Les moyens élastiques comportent des ressorts hélicoïdaux enroulés autour des éléments de fixation, les ressorts hélicoïdaux ayant une forme tubulaire qui entoure avantageusement les éléments de fixation.The elastic means comprise helical springs wound around the fixing elements, the helical springs having a tubular shape which advantageously surrounds the fixing elements.

Les moyens élastiques comportent des lames ressort qui elles même comportent des perçages, les éléments de fixation passant par lesdits perçages, en particulier pour des modes de réalisation plus aplatis.The elastic means comprise leaf springs which themselves comprise bores, the fixing elements passing through said bores, in particular for more flattened embodiments.

Les moyens élastiques comportent un matériau élastique tel que de l'uréthane, un polymère expansé, un polymère réticulé ioniquement, ou du caoutchouc, potentiellement moins chers que les éléments métalliques précédents.The elastic means comprise an elastic material such as urethane, an expanded polymer, an ionically crosslinked polymer, or rubber, potentially less expensive than the preceding metallic elements.

Les moyens élastiques sont précontraints en compression, toujours dans l'optique d'un mode de réalisation plus aplati.The elastic means are prestressed in compression, again with a view to a more flattened embodiment.

Les éléments de fixation comportent des vis, qui permettent un ajustage ou serrage des dimensions et/ou de la raideur des éléments élastiques.The fixing elements comprise screws, which allow adjustment or tightening of the dimensions and / or the stiffness of the elastic elements.

Les éléments de fixation comportent des rivets potentiellement moins chers.The fasteners have potentially cheaper rivets.

Les éléments de fixation comportent des tiges plastiques bouterollées, sans métal, et potentiellement encore moins chers.Fasteners feature snap-butted plastic rods that are metal-free and potentially even cheaper.

Le noyau mobile comporte au moins un aimant, et le châssis comporte une bobine de sorte que le châssis fixe reçoit l'élément requérant une alimentation.The movable core has at least one magnet, and the frame has a coil so that the stationary frame receives the element requiring power.

Le châssis comporte un corps portant une partie des moyens d'actionnement et un fond, formant support, et en ce que le corps et le fond comportent une fixation provisoire, et sont assemblés par les éléments de fixation. Cette fixation provisoire permet lors de l'assemblage , le transport du produit semi-fini et d'avoir un composant intègre.The frame comprises a body carrying part of the actuating means and a bottom, forming a support, and in that the body and the bottom have a temporary fixing, and are assembled by the fixing elements. This temporary fixing allows during assembly, the transport of the semi-finished product and to have an integral component.

La fixation provisoire comporte un clippage par coopération de forme, fixation provisoire simple et peu chère.The provisional fixation comprises a clipping by cooperation of form, simple and inexpensive provisional fixation.

L'invention a aussi pour objet le module d'interface tactile à retour haptique associé, caractérisé en ce qu'il comporte un actionneur tel que précédemment décrit.The subject of the invention is also the associated haptic feedback tactile interface module, characterized in that it comprises an actuator as described above.

D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante, donnée à titre d'exemple et sans caractère limitatif, en regard des dessins annexés sur lesquels :

  • la figure 1 montre schématiquement une vue en coupe transversale d'un module d'interface selon un mode de réalisation dit "suspendu", où l'actionneur forme un bloc isolé, fixé à la surface tactile à mettre en mouvement;
  • la figure 2 montre schématiquement le module d'interface de la figure 1 en vue de profil,
  • la figure 3 montre un mode de réalisation alternatif de module d'interface, en vue de profil.
Other characteristics and advantages of the invention will emerge from the following description, given by way of example and without limitation, with reference to the appended drawings in which:
  • the figure 1 schematically shows a cross-sectional view of an interface module according to a so-called "suspended" embodiment, where the actuator forms an isolated block, fixed to the touch surface to be set in motion;
  • the figure 2 schematically shows the interface module of the figure 1 in profile view,
  • the figure 3 shows an alternative embodiment of an interface module, in side view.

Sur toutes les figures, les mêmes éléments portent les mêmes numéros de référence.In all the figures, the same elements bear the same reference numbers.

L'invention concerne un module d'interface tactile à retour haptique 1, par exemple pour un tableau de commande de véhicule automobile, ou encore pour une console centrale de véhicule automobile, permettant de commander des systèmes électriques ou électroniques du véhicule, et pouvant transmettre un retour haptique à un utilisateur ayant par exemple modifié ou sélectionné une commande de manière à assurer à l'utilisateur la prise en compte de la commande modifiée ou sélectionnée.The invention relates to a tactile interface module with haptic feedback 1, for example for a control panel of a motor vehicle, or even for a central console of a motor vehicle, making it possible to control the electrical or electronic systems of the vehicle, and capable of transmitting. haptic feedback to a user who, for example, modified or selected a command so as to ensure the user that the modified or selected command is taken into account.

Le module d'interface comprend une surface tactile 3, par exemple utilisant une technologie capacitive, ou résistive intégrée sur les écrans tactiles ou touchpad voire de simples zones type bouton, sliders utilisant les technologies capacitives ou résistives (dite FSR : Force Sensing Resistor) pour détecter la localisation du doigt d'un utilisateur (et additionnellement l'effort dans le cas d'une technologie résistive) sur une position de sa surface correspondant à une commande. Il est aussi possible d'utiliser une dalle tactile, transparente et superposée à un écran d'affichage, fonctionnant par exemple par détection des ondes de surface.The interface module comprises a touch surface 3, for example using capacitive or resistive technology integrated into the touch screens or touchpad or even simple button-type zones, sliders using capacitive or resistive technologies (known as FSR: Force Sensing Resistor) for detecting the location of a user's finger (and additionally the force in the case of resistive technology) on a position of its surface corresponding to a command. It is also possible to use a touch screen, transparent and superimposed on a display screen, operating for example by detecting surface waves.

Sur la figure 1, la surface tactile est liée de manière flottante au bâti 5 du module d'interface tactile 1. La liaison entre la surface 3 et le bâti 5 se fait par une liaison 7 de type membrane semi-rigide, ou tout autre moyen de fixation permettant des mouvements limités, notamment en vibration le long de l'axe perpendiculaire à la surface tactile 3.On the figure 1 , the tactile surface is linked in a floating manner to the frame 5 of the tactile interface module 1. The connection between the surface 3 and the frame 5 is made by a connection 7 of the semi-rigid membrane type, or any other fixing means allowing limited movements, especially in vibration along the axis perpendicular to the touch surface 3.

La surface tactile 3 est reliée à un actionneur 9 qui provoque le retour haptique lors de la détection de l'appui de l'utilisateur. Cet actionneur 9 comporte d'une part un châssis 11, rendu solidaire de la surface tactile 3, et un noyau mobile 13 coopérant avec le châssis.The tactile surface 3 is connected to an actuator 9 which causes the haptic feedback when the user presses it. This actuator 9 comprises on the one hand a frame 11, made integral with the touch-sensitive surface 3, and a movable core 13 cooperating with the frame.

Le noyau mobile 13, logé dans le châssis 11 est mis en mouvement entre des positions extrémales par des moyens d'actionnement électromagnétiques 15, 17. Lors de ce mouvement de va-et-vient, le noyau alterne des phases d'accélération et de décélération, lors desquelles le noyau mobile 13 entraîne la mise en mouvement de la surface tactile 3, et donc le retour haptique.The movable core 13, housed in the frame 11 is set in motion between extreme positions by electromagnetic actuation means 15, 17. During this back-and-forth movement, the core alternates phases of acceleration and of deceleration, during which the movable core 13 drives the setting in motion of the tactile surface 3, and therefore the haptic feedback.

Pour réaliser les moyens d'actionnement électromagnétiques 15, 17, le châssis 11 porte une bobine 15 pouvant fournir un champ magnétique et le noyau mobile 13 porte au moins un aimant 17, préférentiellement plusieurs, disposés au plus près de la bobine 15, et est libre en translation le long de l'axe A-A. To produce the electromagnetic actuation means 15, 17, the frame 11 carries a coil 15 capable of providing a magnetic field and the movable core 13 carries at least one magnet 17, preferably several, arranged as close as possible to the coil 15, and is free in translation along axis AA.

Il est également possible de réaliser le montage inverse, la bobine 15 étant alors solidaire du noyau mobile 13 et le ou les aimants 17 étant alors solidaires du châssis 11.It is also possible to perform the reverse assembly, the coil 15 then being integral with the movable core 13 and the magnet (s) 17 then being integral with the frame 11.

La figure 1 montre un mode de réalisation d'un actionneur dit "suspendu". Par suspendu, on entend que l'actionneur 9 n'est pas relié au bâti 5 du module d'interface tactile 1, et le châssis 11 de l'actionneur est solidaire de la surface tactile 3.The figure 1 shows an embodiment of a so-called "suspended" actuator. Through suspended, it is understood that the actuator 9 is not connected to the frame 5 of the touch interface module 1, and the frame 11 of the actuator is secured to the touch surface 3.

Le noyau mobile 13 présente une section en E dont la branche centrale est enchâssée dans une portion à section en U correspondante du châssis 11.The movable core 13 has an E-section, the central branch of which is embedded in a corresponding U-section portion of the frame 11.

La figure 2 montre l'actionneur de la figure 1 schématiquement représenté de profil, de sorte que des moyens élastiques 21 et des éléments de fixation 23 dudit actionneur 9, préalablement non représentés sont visibles.The figure 2 shows the actuator of the figure 1 schematically shown in profile, so that elastic means 21 and fixing elements 23 of said actuator 9, previously not shown, are visible.

En figure 2 est notamment représentée la ligne I-I selon laquelle la coupe de la figure 1 à été effectuée. En particulier, ladite coupe est transversale, et les moyens élastiques 21 et les éléments de fixation 23, qui sont situés aux extrémités longitudinales, sont donc invisibles en figure 1.In figure 2 is shown in particular the line II according to which the section of the figure 1 Has been done. In particular, said section is transverse, and the elastic means 21 and the fixing elements 23, which are located at the longitudinal ends, are therefore invisible in figure 1 .

Sur la figure 2 on peut notamment voir que le châssis 11 comporte à ses extrémités latérales des languettes extrémales 25, percées en leur centre. Le noyau mobile 13 comporte lui aussi des languettes extrémales 27, percées en leur centre, disposées de sorte que les perçages des languettes 25, 27 portées respectivement par le châssis 11 et le noyau mobile 13 soient alignés selon l'axe A-A. On the figure 2 it can in particular be seen that the frame 11 comprises at its lateral ends extremal tongues 25, pierced in their center. The movable core 13 also comprises end tongues 27, pierced in their center, arranged so that the holes in the tongues 25, 27 carried respectively by the frame 11 and the movable core 13 are aligned along the axis AA.

Les perçages des languettes 25, 27 accueillent les éléments de fixation 23, ici schématiquement représentés sous forme de vis, qui forment des guides en translation du noyau mobile 13. On peut en alternative utiliser des guides dédiés de type queue d'aronde ou glissière rectangulaire entre la pièce 13 et le bâti 11 pour faire cette fonction.The holes in the tabs 25, 27 accommodate the fixing elements 23, here schematically represented in the form of screws, which form guides in translation of the mobile core 13. As an alternative, dedicated guides of the dovetail or rectangular slide type can be used. between part 13 and frame 11 to perform this function.

En particulier, les languettes extrémales 27 portées par le noyau mobile 13 coulissent le long du corps des vis formant les éléments de fixation lors du mouvement dudit noyau mobile 13.In particular, the end tongues 27 carried by the movable core 13 slide along the body of the screws forming the fixing elements during the movement of said movable core 13.

Les moyens élastiques 21, ici des ressorts hélicoïdaux sont disposés autour des éléments de fixation 23, avec un ressort hélicoïdal 21 de part et d'autre des languettes extrémales 27 du noyau mobile 13. En particulier, les ressorts hélicoïdaux 21 sont ici enroulés autour des vis formant éléments de fixation 23.The elastic means 21, here helical springs are arranged around the fixing elements 23, with a helical spring 21 on either side of the end tongues 27 of the movable core 13. In particular, the helical springs 21 are here wound around the screws forming fasteners 23.

En outre ou en alternative, les moyens élastiques peuvent comporter des lames ressort qui elles même comportent des perçages, les éléments de fixation 23 passant par lesdits perçages, si l'espace est limité le long des éléments de fixation 23.In addition or as an alternative, the elastic means may comprise leaf springs which themselves comprise bores, the fixing elements 23 passing through said bores, if space is limited along the fixing elements 23.

En outre les moyens élastiques 21 peuvent comporter un matériau élastique tel que de l'uréthane, un polymère expansé, un polymère réticulé ioniquement, ou du caoutchouc, par exemple en forme d'anneau ou de tube entourant les éléments de fixation 23.In addition, the elastic means 21 may comprise an elastic material such as urethane, an expanded polymer, an ionically crosslinked polymer, or rubber, for example in the form of a ring or of a tube surrounding the fixing elements 23.

Une extrémité de chaque vis 23 comporte une tête 29 de diamètre plus important, l'autre extrémité 31 étant vissée dans un préperçage d'un support de la surface tactile 3.One end of each screw 23 has a head 29 of larger diameter, the other end 31 being screwed into a pre-drilled hole in a support for the touch surface 3.

La tête de chaque vis 23 retient avantageusement l'un des ressorts hélicoïdaux 21, et le précontraint en compression contre la languette extrémale 27 correspondante du noyau mobile 13. Le ressort hélicoïdal 21 situé en vis-à-vis par rapport à la languette extrémale 27 du noyau mobile 13 est, lui, précontraint entre la languette 27 et la dalle portant la surface tactile 3.The head of each screw 23 advantageously retains one of the helical springs 21, and the prestressed in compression against the corresponding extremal tongue 27 of the movable core 13. The helical spring 21 located vis-à-vis with respect to the extremal tongue 27 of the movable core 13 is itself prestressed between the tongue 27 and the panel carrying the tactile surface 3.

Un autre mode de réalisation dans lequel les moyens élastiques 21 sont précontraints en extension est toutefois aussi envisageable.Another embodiment in which the elastic means 21 are prestressed in extension is however also conceivable.

D'autres modes de réalisation sont aussi envisagés dans lesquels les éléments de fixation 23 comportent des rivets, emboutis à l'assemblage, ou des tiges plastique bouterollées à chaud à l'assemblage.Other embodiments are also envisaged in which the fastening elements 23 comprise rivets, stamped during the assembly, or plastic rods hot stamped on the assembly.

Les moyens élastiques 21 définissent ainsi dans la présente invention une position de repos flottante du noyau mobile, en l'absence d'actionnement par la bobine 15 et les aimants 17 formant les moyens d'actionnement. Cette position flottante permet un actionnement plus efficace à même énergie fournie.The elastic means 21 thus define in the present invention a floating rest position of the movable core, in the absence of actuation by the coil 15 and the magnets 17 forming the actuation means. This floating position allows more efficient actuation with the same energy supplied.

La figure 3 montre un mode de réalisation alternatif de module d'interface 1.The figure 3 shows an alternative embodiment of interface module 1.

Le mode de réalisation de la figure 3 diffère de celui de la figure 2 en ce que le châssis 11 est composé d'une pluralité de pièces, ici en particulier deux.The embodiment of the figure 3 differs from that of the figure 2 in that the frame 11 is composed of a plurality of parts, here in particular two.

Le châssis comporte ici un corps 11a, comportant notamment la portion à section en U qui porte la bobine 15 et les languettes extrémales 25, et un fond 11b, qui forme la surface d'appui sur la dalle de la surface tactile 3.The frame here comprises a body 11a, comprising in particular the portion with a U-shaped section which carries the coil 15 and the end tongues 25, and a bottom 11b, which forms the bearing surface on the slab of the touch-sensitive surface 3.

Le fond 11b peut aussi comporter des parois latérales (non représentées) pour former une enceinte au moins par endroits, enceinte que les languettes extrémales 25 du corps 11a viennent fermer. L'enceinte ainsi obtenue protège notamment l'actionneur 9 des éléments extérieurs tels que la poussière.The bottom 11b can also include side walls (not shown) to form an enclosure at least in places, enclosure that the end tongues 25 of the body 11a come to close. The enclosure thus obtained protects in particular the actuator 9 from external elements such as dust.

Le corps 11a et le fond 11b du châssis sont reliés par une fixation provisoire 33, par exemple par coopération de forme de type clippage.The body 11a and the base 11b of the frame are connected by a temporary fixing 33, for example by clipping-type form cooperation.

De la sorte, le corps 11a et le fond 11b peuvent être manipulés séparément, puis préassemblés au moyen de la fixation provisoire 33, avant d'être définitivement assemblés par les moyens de fixation 23 qui maintiennent définitivement ledit corps 11a et le fond 11b ensemble.In this way, the body 11a and the bottom 11b can be handled separately, then preassembled by means of the provisional fixing 33, before being definitively assembled by the fixing means 23 which permanently hold said body 11a and the bottom 11b together.

En particulier, le corps 11a et le fond 11b peuvent alors être conçus de sorte à être obtenus par moulage en moins d'étapes, et/ou en étapes simplifiées, par exemple sans nécessiter de contre-dépouille, découpe ou fraisage ultérieur. En outre, le corps 11a est potentiellement plus aisément manipulable lors du montage de la bobine 15, par exemple par enroulement automatisé de câble métallique autour de la portion à section en U.In particular, the body 11a and the bottom 11b can then be designed so as to be obtained by molding in fewer steps, and / or in simplified steps, for example without requiring undercut, cutting or subsequent milling. In addition, the body 11a is potentially more easily manipulated during assembly of the coil 15, for example by automated winding of metal cable around the U-section portion.

La fixation provisoire 33 permet un préassemblage du châssis 11, éventuellement avec le noyau 13 préalablement inséré à sa position, de sorte à obtenir un module semi-fini aisément manipulable. Ainsi, le préassemblage et le montage et l'assemblage définitif que ledit montage implique peuvent être effectués à des postes différents, potentiellement éloignés géographiquement.The temporary fixing 33 allows a pre-assembly of the frame 11, possibly with the core 13 previously inserted in its position, so as to obtain a semi-finished module that is easily handled. Thus, the pre-assembly and the assembly and the final assembly that said assembly implies can be carried out at different stations, potentially geographically distant.

L'invention permet ainsi d'obtenir un actionneur 9 plus compact, d'assemblage plus facile donc potentiellement moins coûteux. En outre, les moyens élastiques 21 et le serrage des éléments de fixation 23 permet de réduire significativement le jeu des pièces impliquées.The invention thus makes it possible to obtain a more compact actuator 9, easier to assemble and therefore potentially less expensive. In addition, the elastic means 21 and the tightening of the fixing elements 23 make it possible to significantly reduce the play of the parts involved.

Claims (13)

  1. Actuator (9) for a touch interface module (1) with haptic feedback, intended to be linked to a touch surface (3) capable of detecting a contact from a user, and capable of generating haptic feedback as a function of a detected contact and comprising:
    - a frame (11),
    - a movable core (13) cooperating with the frame (11), intended to be driven in motion between extreme positions to generate the haptic feedback,
    - electromagnetic actuation means (15, 17) borne by the frame (11) and the movable core (13) for driving the motion of the movable core (13) alternating phases of acceleration and of deceleration and causing the touch surface to be set in motion,
    - fixing elements (23), intended to link the actuator to the touch surface (3),
    - elastic means (21) defining a rest position of the movable core (13) in the absence of being driven by the actuation means (15, 17),
    characterized in that the elastic means (21) comprise first and second elastic means (21) disposed around said fixing elements (23) so as to define a floating rest position of the movable core (13) .
  2. Actuator according to Claim 1, characterized in that the fixing elements (23) form a guide for the motion of the movable core (13).
  3. Actuator according to Claim 1 or 2, characterized in that the elastic means (21) comprise helical springs wound around the fixing elements (23).
  4. Actuator according to one of the preceding claims, characterized in that the elastic means (21) comprise spring blades which themselves comprise piercings, the fixing elements (23) passing through said piercings.
  5. Actuator according to one of the preceding claims, characterized in that the elastic means (21) comprise an elastic material such as urethane, an expanded polymer, an ionically cross-linked polymer, or rubber.
  6. Actuator according to one of the preceding claims, characterized in that the elastic means (21) are prestressed in compression.
  7. Actuator according to one of the preceding claims, characterized in that the fixing elements (23) comprise screws.
  8. Actuator according to one of the preceding claims, characterized in that the fixing elements (23) comprise rivets.
  9. Actuator according to one of the preceding claims, characterized in that the fixing elements (23) comprise headed plastic rods.
  10. Actuator according to one of the preceding claims, characterized in that the movable core (13) comprises at least one magnet (17), and the frame (11) comprises a coil (15).
  11. Actuator according to one of the preceding claims, characterized in that the frame (11) comprises a body (11a) bearing a part of the actuation means (15) and a bottom (11b) forming a support, and in that the body (11a) and the bottom (11b) comprise a provisional fixing (33), assembled by the fixing elements (23) .
  12. Actuator according to Claim 11, characterized in that the provisional fixing comprises clipping by form-fitting.
  13. Touch interface module (1) with haptic feedback comprising a touch surface (3) capable of detecting a contact from a user, characterized in that it comprises an actuator (9) according to one of the preceding claims, said actuator (9) being capable of generating haptic feedback as a function of a detected contact.
EP13803092.9A 2012-12-13 2013-11-21 Actuator for a tactile interface module with haptic feedback Active EP2932353B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1203411A FR2999740B1 (en) 2012-12-13 2012-12-13 ACTUATOR FOR TOUCH INTERFACE MODULE WITH HAPTIC RETURN
PCT/FR2013/000302 WO2014091090A1 (en) 2012-12-13 2013-11-21 Actuator for a tactile interface module with haptic feedback

Publications (2)

Publication Number Publication Date
EP2932353A1 EP2932353A1 (en) 2015-10-21
EP2932353B1 true EP2932353B1 (en) 2021-04-14

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EP13803092.9A Active EP2932353B1 (en) 2012-12-13 2013-11-21 Actuator for a tactile interface module with haptic feedback

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US (1) US10146309B2 (en)
EP (1) EP2932353B1 (en)
CN (1) CN105164606B (en)
FR (1) FR2999740B1 (en)
WO (1) WO2014091090A1 (en)

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Also Published As

Publication number Publication date
FR2999740A1 (en) 2014-06-20
US10146309B2 (en) 2018-12-04
US20150316987A1 (en) 2015-11-05
CN105164606B (en) 2018-12-18
EP2932353A1 (en) 2015-10-21
FR2999740B1 (en) 2018-03-30
CN105164606A (en) 2015-12-16
WO2014091090A1 (en) 2014-06-19

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